{"id":"RLSA-2026:85193","summary":"Important: xorg-x11-server-Xwayland security update","details":"Xwayland is an X server for running X clients under Wayland.\n\nSecurity Fix(es):\n\n* xorg-x11-server: xorg-x11-server: Arbitrary code execution via use-after-free in passive grab handling (CVE-2026-93516)\n\n* xorg-x11-server: xorg-x11-server: Privilege escalation via crafted RandR provider property requests (CVE-2026-93521)\n\n* xorg-x11-server: xwayland: xorg-x11-server: Arbitrary code execution via double-free in XKB geometry handling (CVE-2026-88812)\n\n* xorg-x11-server: xorg-x11-server: Out-of-bounds write via unvalidated modifier in ProcXIPassiveUngrabDevice (CVE-2026-93523)\n\n* xorg-x11-server: glamor: size tmp_bits buffer for source coordinate  range in upload_boxes (CVE-2026-93522)\n\n* xorg-x11-server: xorg-x11-server: arbitrary code execution via GLX RenderLarge heap-based buffer overflow (CVE-2026-93517)\n\n* xorg-x11-server: xorg-x11-server: arbitrary code execution via integer truncation during keyboard mapping resize (CVE-2026-93518)\n\n* xorg-x11-server: xorg-x11-server: Arbitrary code execution via buffer overflow in input_constrain_cursor() (CVE-2026-93519)\n\n* xorg-x11-server: xorg-x11-server: arbitrary code execution via out-of-bounds write in XKB keycode handling (CVE-2026-93520)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","modified":"2026-10-20T12:15:38.495025733Z","published":"2026-10-20T12:05:07.452289Z","upstream":["CVE-2026-88812","CVE-2026-93516","CVE-2026-93517","CVE-2026-93518","CVE-2026-93519","CVE-2026-93520","CVE-2026-93521","CVE-2026-93522","CVE-2026-93523"],"database_specific":{"license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:85193","license":"CC-BY-4.0"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:85193"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545161"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545164"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545174"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545177"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545178"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545246"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545860"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545887"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2545908"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:85193"}],"affected":[{"package":{"name":"xorg-x11-server-Xwayland","ecosystem":"Rocky Linux:9","purl":"pkg:rpm/rocky-linux/xorg-x11-server-Xwayland?distro=rocky-linux-9&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:24.1.9-4.el9_8.4"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:85193.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}